FX3 [0] is one of my fav albums from Virt, but I don't think he ever released the source? If I get it right it was composed as .nsf files too.
I saw there was a MIDI file for at least one of the songs (Choppastyle [1][2]), so maybe there's a chance to get the rest of them from somewhere? I'd love to hear a version with modern synth instruments to compare and contrast (although my dream is for a cover of the whole album by www.paulgilbert.com and friends hahah).
NOTE: the redirect from links like [2] is a bit jarring, it would feel more natural if the URL remained (instead of the redirect to [3]). It would also make it easier to share a specific song by just copying the URL.
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0: https://virt.bandcamp.com/album/fx3-remastered
1: https://virt.bandcamp.com/track/choppastyle
2: https://chiptune.app/?play=Contemporary%2FVirt%2Fv-choppasty...